ac2000

Alright i'm really opening my self up here but here it goes.
Basically i just bought an 03 Silver Mustang Cobra Convertible. I dont know anything about the car as far as what i can modify to make it faster. I was hoping some people could give me a basic run down of mods and how and why they work as well as the effects they have. I understand most of you are experts but i appreciate any advice.

randy78045

No reason to flame here... Trust me, there is no end to mods and no end to suggestions that will follow...

RR03Cobra

Congrats on your new ride!! I would start with a good cold-air kit. The factory air box and silencer really take away your gains! The next mod would be a good cat-back. There have been several dynographs that will back up a 18 to 20 rwhp gain. I think it was last month's 5.0 mag that had a bolt on extravaganza on the 03/04 cobras!! After these two mods, you will need some better tires! You should be a little over 400 rwhp with these simple mods. This should get you started!
A good handheld tuner is a nice piece to have for tuning purposes. SCT and Diablosport have some of the finest on the market! I have a Predator, but I hear the X-Cal 2 is the bomb!!! For the really big gains, an upper or lower pulley, sometimes both, will give you the best HP and torque gains! BUT with the addition of a pulley, you WILL need a good tune!! Make sure you use a good reputable tuner for your tuning needs!! I hope this helps ya out a bit! We are a brotherhood bro, there are plenty of kewl guys/ gals that will help ya out!
Rocky

ac2000

Ok i appreciate the list of mods, but would it be too much to ask to elaborate on them. Such as, what changing the pullies does to add horse power for example. Also how does a tuning tool work?

CarlessAndy

Putting a smaller pully on rotates the supercharger faster thus condensing air more rapidly.
A tuner reprograms the cars computer for different things such as advancing the timing and other things.